RE: new gun
id definently get the bugs worked out of the gun if it patterned good.....cant be anything that cant be fixed...clean it REALLY good....and check the o rings as said......all it takes is a little dirt in the right place and it wont function.....id also contact remington before i got rid of it if i couldnt fix it...could be something simple.....id bet it is....good luck....sure someone knows for sure....i just know what i read....and know semis have to be clean to operate...expecially those gas operated guns....you gota take it APART...can clean the gas tube and everything....